As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHL/IAD - FLT 6197 - DURING TAXI FOR TAKEOFF AT 2330 ON 7-31-95, RETURNED TO THE GATE DUE TO THE RT MAIN BATTERY INDICATING AN OVERTEMP CONDITION. AIRCRAFT RETURNED TO GATE WITH NO FURTHER INCIDENTS. MAINTENANCE REPLACED THE RT MAIN BATTERY. AIRCRAFT RELEASED AND APPROVED FOR RETURN TO SERVICE. (X)